Brick-mold.



H. E. HUNT.

BRIGK MOLD.

APPLICATION FILED JULY 10,1913.

Patented Sept. 1, 1914.

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Be it known that I, HENRY, ,Eowiino HUNT, a subject of theof- Great Britain, residing. in the city' of Toronto;,- fcounty of York, Province of- Ontario, Canada," have invented certain new and useful Improye-l ments inBrick-Molds, ofwhichthe foll ing is a specification. I

My invention relates to improvements in brick molds, and relates more particularly to that class of mold composed of four sides made of wood, and the object of my invention is to-construct the bottom of the mold so that there will be no possible chance of the same swelling sufiiciently to interfere with the escape of air from the mold, and

my invention comprises a stock-board, the

ends of which are secured to the mold, and l the width of said stock-board being considerably less than the width of the inner faces of the side walls so as to prevent any.;possi- I bilityof the sides of the stock-board expand- I ing sufliciently under the action of moisture,

. to interfere with the escape of air from the material that will not appreciably expand mold during the period when a brick is be ing manufactured, and aplatemade of such under the action of moisture, the said plate being secured to the upper side of said stockboard, the sides thereof being spaced a short distance apart from the inner walls 'ofthe sides of the mold to permit the ready escape f air, as hereinafter more particularly set mold, and B one of the ends.

forth.

Figure 1 is a perspective View of my preferred form of mold bottom, and Fig. 2 is A are the ordinary wooden sides of a brick of the stock -board .D extend underneath "the lower' edgesof the ends B of the mold, and are so secured to the ends of the mold by any suitable means such as screws or nails (not shown). Uponreferring particularly to Fig. 2, it will be noticed that the sides E of the stock-board D are. spaced well apart from the inner walls F ofthe sides A of the mold. v v

The stock-board, which is made of wood, expands under the action of moisture absorbed from the-clay, and I have made the said stock-board tohave thedesired clear- The ends C meant-a1; inner walls F so thatthe said stock-boardcan not expand laterally; sufiicientlyfto';interfere;with1 the free escape of air from the ;mold during the manufacture,

of the brick. Suitably secured to the upper ,side ofthe stock-board D vis a. metallic ,plate f.G,"the, sidesH of which are sufficientlyremoved from the inner walls F so as to leave a space 0 down each side of the mold to permit the escape of air therefrom. I preferably makethe plate G of metal so that the same will not expand and close up the said passageway. Byreason of the nature of the sald plate, the sides H thereof are close enough to the walls F to prevent the formation of ragged edges on the bottom side of the bricks. WVere the stock-board D alone used with its sides E far enough removed from the inner walls F to prevent it expanding sufliciently to prevent the escape of air from the mold, portion of the sides of the bottom of the brick wouldebe forced out enteasept. 1; 1914.

of the mold between the said sides A and the danger of interfering with the escape of air from the mold.

If desired, the ordinary centerpiece I may be secured to the stock-board and upon the metallic plate G. It will be understood by one skilled in this art that the centerpiece I may be stamped out of the metallic plate G, if desired, without departing fromthe spirit of my invention.

The principle of my invention may be applied invarious ways, and I do not confine myselftothe construction herein shown and described except in so far as that maybe necessary by reason of the'prior art and the terms of my claim. e

By one skilled in this art, it will be understood that the brick molds have to be periodically washed out with water, and this is usually accomplished by immersing the molds and soaking them in water. Naturally all the wooden parts of the molds expand as a result of this treatment, and my inven- I Although the side A of the mold will expand a certain amount, the sides H of the plate G will be so positioned in' respect of the .walls F to prevent such expansion closingup thespaces O. I

board, the ends of which extend underneath the said end members and are secured thereto; the Width of saidstock board being con siderably less than the" distance between the inner Walls of said sides of the m0ld, s0 as to prevent any possibility 0f said stockfere With'the escape'of air from the mold a metallic plate carried by theup'n'e'r side of said stock-board, the Width of said plate'be- Witnesses. board laterally expandlng enough to' lnter- 7 I ing less than the horiicntal distance between said inner walls of said sides of the mold 5 so as t0 provide a'pa'ssage-Way between each side, of the said plate and the said inner wallsto permit the ready escape of air from th m d, I r,

Signed at Toronto this 8th day of July 1913, in the presence of the undersigned HENRYEDWARD HUNT.-: Witnesses Eennhrbn/R, CASE, Joy M. "PANNELL.

Copiestf this patent may be obtained for tire cents each hy addressing the cemmissioner 0! Patents,

' Washington,'D.O 1 

